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Qingdao Great Chemical Inc.

    
Hydroxypropyl Methylcellulose

Hydroxypropyl Methylcellulose


[GC029] [China]
Posted Date: March 18, 2006
Free Member  |  Rate this company
   
Description
Methylcellulose Technical specifications:
1) Methoxyl content: 28.0 - 30.0%
2) Hydroxypropoxyl content: 7.0 - 12.0%
3) Gelation temperature: 58.0 - 64.0°C
4) Loss or drying: ≤5.0%
5) Burnt residues: ≤1.0%
6) PH value (1% solution at 25°C): 4.0 - 8.0
7) Viscosity (2% solution at 20°C): 5 - 100,000mPa.s

Physical properties:
1) Appearance: HPMC is a white or light gray pellet or fibril power with
odorless and tasteless
2) Solubility: hardly dissolves in waterless ethanol, aether or acetone,
expands as to clear or slightly muddy colloid solution in cold water; it
can dissolve in some organic solvents or some water-organic components
3) Pellet: 100 screen passable rate is over 98.5%, 80 screen passable rate
is 100%

Dissolving process:
HPMC will agglomerate when directly added to water and then dissolve. In this way it dissolves very slow and hard. Suggested methods as followers:
1) In hot water: add water in container to 1/3 or 2/3 of its content, heated
to over 80°C, because HPMC doesn't dissolve in hot water, it uniformly
disperses in hot water; add cool water or ice to the residual content, stir
and cool down the mixture
2) Powder combination: mix HPMC with identical volume of other powder,
disperses them sufficiently then add water to the mixture result HPMC
dissolves without agglomeration
3) Organic solvent wet: dispersed or wet with organic solvents, such as
ethanol, glycol or oil, then add water can cause HPMC completely dissolves

Applications:
HPMC is mainly used as dispersant in the production of PVC and as thickener, stabilizer, emulsifier, excipient, water retention agent, film-forming agent in petrochemical, building materials, agrochemical, ink, printing and dyeing of textile, paper making and cosmetics.

Transportation and storage:
1) Keep dry where good ventilated
2) Do not wet and keep away from sunshine during transportation

Packing:
25kg/multi-paper bag or Kraft paper bag
 
 
Other Information
Location:  China 
Minimum Order:  0 
Price for Minimum Order:   
  (This price is only for minimum order, for large quantities, please contact)
Sample Available:  NO 
Related Categories: Chemical Additives, Auxiliary, Others »
Related Products: hpmc, additives
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Chemical Additives, Auxiliary: ketamine, phosphoric acid, sodium hydroxide, acetic acid, potassium chloride, sodium bicarbonate, bentonite, calcium chloride, sodium chloride, bromelain, hydrochloric acid, titanium dioxide, potassium nitrate, anhydrous ammonia, stearic acid
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